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Power Generation
Topic: Power generation equipment control.
from the OPERATIONS department...
Gas Turbine in Base Load with Droop Speed control
Posted by sriram sandeep on 19 June, 2013 - 2:54 pm
Clarification about Gas turbine operation in base load with different load controls
Topic: Power generation equipment control.
from the Power generation department department...
Gas turbine control system MK-VIe input power supply redundant
Originally posted by Vimal Gupta on 19 June, 2013 - 9:07 am
Gas turbine control system MARK-VIe control power supply 125VDC to be redundant
New Replies:
vimal gupta, It seems more appropriate to answer question 4 first and then refer you back to...
Originally posted by sdbarman on 17 June, 2013 - 11:30 pm
MW Hunting is observed in a Frame 6B Unit running with Liq and Gas Fuel with Mark-VI Control. The observation and action taken has been summarized below.
Kindly suggest.

New Replies:
sdbarman, Please list the Diagnostic Alarms which are being annunciated for all the cards in...
Dear CSA Thank you for your feedback. The trend data and diagnostic alarms have also been...
A lot of information, but not much actionable data. Thank you, though for providing the results of...
Topic: Power generation equipment control.
from the MECHANICAL department...
JAW CLUTCH DISENGAGES AT 36% TNH
Originally posted by PRASAD DEVU on 17 June, 2013 - 8:18 am
During start-up jaw clutch is getting disengaged at 36% speed. Diesel engine servicing, alignment checked. Please suggest solution.
New Replies:
Well explained!!...
PRASAD DEVU, Is this same problem occurring on all three of your GE-design Frame...
Do you know if the 4 Kg/cm2 is according to spec? I have no experience of this particular torque...
Topic: Power generation equipment control.
from the Forum department...
Moog servo valve
Originally posted by iqbal on 17 June, 2013 - 5:31 am
Mechanical null adjustment in moog servo valves
New Replies:
Iqbal, Congrats you have succeeded in null bias adjustment. Thanks CSA for more information. ...
iqbal, You seem to have been very lucky with your adjustment; most sites that attempt this end...
Topic: Power generation equipment control.
from the Operation department...
PSS in Excitation System
Originally posted by Vinu on 18 June, 2013 - 2:48 am
What is the need for PSS in excitation system?
New Replies:
Here's a good description of what a PSS does: http://www.powerapps.org/PAES_PowerSSApps.aspx If...
Sinu ... is the PSS proposed by the machine supplier, or is it an edict from your Regional...
Topic: Power generation equipment control.
from the Forum department...
NOx injection in Gas Turbine
Originally posted by Awaneesh on 17 June, 2013 - 5:40 pm
Flame off feedback due to NOx injection
New Replies:
Awaneesh, Hmmm..... Are the flame detectors cooled with water (coils placed around the flame...
Topic: Power generation equipment control.
from the MARK-VIE CONTROL SYSTEM department...
110 vac power supply loss in gas turbine running
Originally posted by BGGTS on 15 June, 2013 - 11:19 pm
110VAC POWER LOSS IN GAS TURBINE FRAME-V RUNNUNG CONDITION
New Replies:
>If shut down 110VAC power and after UPS >replacement it to be ON then any >possibility...
Thanks a lot sir, I have checked in drawing and found UPS power supply given to HMI/UDH/PDH/SPAR...
CSA - you are probably correct that the N-TRON IONET switches for the gas turbine are powered by...
I will agree with CSA when he says that the UPS outage will NOT trip the gas turbine. That is...
otised, I respectfully disagree that the 110 VAC UPS powers the IONET network switches. They are...
IF your control system is typical of most GE-provided systems, the only interruption you will...
If you remove the 110VAC UPS the turbine will trip. The UPS powers the Ethernet network switches...
Topic: Power generation equipment control.
from the Maintenance department...
Generator trip by " Rotor protection operated"
Originally posted by Azzam88 on 17 June, 2013 - 8:13 am
Generator trip by " Rotor protection operated" during startup


New Replies:
Er, ..., Um, ... Are you sure there isn't a real problem with "the rotor"? Do you know...
Azzam... can you be more specific as to the identity of the "Protective Device Number"...
Topic: Power generation equipment control.
from the Engineering department...
Rexa Actuators on Fuel gas valve for GE7FA?
Originally posted by Chas on 14 June, 2013 - 2:44 pm
Has anyone used a Rexa actuator on an IGV or fuel gas valve on a frame 7FA?
New Replies:
Chas, There are non-hydraulic gas control valve & IGV actuator solutions on the market. ...
Topic: Software, including programming, OS issues, etc.
from the Controls department...
TXP Support
Posted by Saad on 17 June, 2013 - 1:26 am
We have a Single Station TXP machine. Its motherboard failed. After replacement of the MB, the system came back online but the archives are not accessible. How can we restore the archives.
Originally posted by MATRIX on 15 June, 2013 - 11:42 pm
Gas turbine frame-V control system Mark-Vie showing vibration differential high alarm
New Replies:
MATRIX, You are working with a GE-design Frame 5 heavy duty gas turbine...
Originally posted by Abdur Rehman on 12 June, 2013 - 3:27 pm
GT's Turbine accessory and load gear compartments temperature are running very high close to trip value of 450F.
New Replies:
> 2-No P&ID is available for ventilation system of this GT. Note: GE calls their gas...
firstly,thanks for your detail reply. 1-there is no fire extinguishing mechanism in our GT which...
Topic: Power generation equipment control.
from the Forum department...
Gas Turbine Not Cooling
Originally posted by Thomas on 13 June, 2013 - 5:36 am
Possible Air ingress into the Turbine compartment resulting in insufficient cooling of the Turbine compartment
New Replies:
Thomas, R u having online monitoring of turbine compartment temperature? if so than can you...
Thomas, Some turbine compartments are under a positive pressure by the turbine compartment vent...
Topic: Power generation equipment control.
from the mystery variables department...
MK IV Temp Control Curve Modification
Originally posted by Chris on 5 April, 2011 - 12:14 pm
GE has changed our 3rd stage seals and needs to change our control constants (temp curves) and the FSR Peak curve change doesn't make sense to me and I'm hoping to learn something in my efforts to make that make sense to me.
New Replies:
MS5001fan, I don't understand this statement: > - The unit has always operated with a 100F...
This doesn't precisely relate to the issue of primary vs. secondary exhaust temperature control,...
Topic: Power generation equipment control.
from the simulation department...
Turbine Generator Simulation
Originally posted by Dave on 10 June, 2013 - 2:16 pm
Load limiter question for turbine generator simulation
New Replies:
Thanks, Yes, this unit is basically used to control the pressure on their 150# header, and...
Dave, Wow! So many questions.... You are generally correct, but when looking at GE CIMPLICITY...
Thanks, Yes, we are looking at printouts of the what we would call "Mark VI...
Topic: Engineering and workplace issues.
from the Forum department...
Gas Turbine Pressure Drop
Originally posted by avins on 15 October, 2012 - 3:16 am
Pressure drop in Gas turbine air intake system
New Replies:
From a Design Engineering point of view, the rule of thumb is that Gas Turbine Output Power drops...
Topic: Power generation equipment control.
from the Operations department...
Temperature Control
Originally posted by CcpEng on 13 June, 2013 - 9:25 am
Variation of gas turbine temperature control with exhaust temperature
New Replies:
CcpEng, Consult the Control Specification document provided with the Speedtronic gas turbine...
Topic: Power generation equipment control.
from the Electrical department...
Isolated Generator and Droop Governor
Originally posted by gshan on 28 May, 2013 - 6:54 am
Can an isolated generator use droop governor?

New Replies:
1) You would have to ask the manufacturer or consult the documentation regarding the efficiency of...
Topic: Power generation equipment control.
from the CES department...
MARK V COMM IO LOSS TRIP
Originally posted by Divyang Shah on 4 June, 2013 - 2:01 am
Gas turbine got tripped. Communication IO loss alarm was reported.
New Replies:
Mr Shah, We have experienced numerous such loss of IO events in our 7EA fleet (2000-2002...
Topic: Power generation equipment control.
from the Gas generator vsv system department...
VAV servo valve torque motor
Posted by jack on 13 June, 2013 - 8:32 am
vsv servovalve torque motor null shift more than 15mA
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